Clean-out plug



' Dec. 17; 1929.` -F J MERS vReimed Dee. 17, 1929 UNITEDA STATES PATENToFFlcE FREDERICK .Tf EEESEELDEE AND PAUL EALzE, oELEoNIA, NEW JEEsEY,AssmNoEs 'ro n. a E. MANUFACTURING co., INC., oF LEONIA, NEW JERSEY, .acoEPoEA'rIoN or NEW JERSEY f originar No. 1,7o 2,s7s, dated Thisinvention relates to improvements in clean out plugs and has particularreferenceV to detachable plugs used in connection with clean outs ondrains. Y

The ordinary clean out, used in connection with drains, consists of abody in the-nature thread, a brass plug. The body is usually made ofiron and is caulked into the hub of the pipe or trap, leaving the brassplug'removable for the purpose of cleaning the drain or tray. In manycases the brass plug is lost or broken requiring its replacement. Sincethejl threaded portions of the body and plug vary somewhat as to theirdiameters from other bodies and plugs, it becomes very dilicult toobtain the size of the newV plug new body for which the plug isfurnished,

`but this replacement of the new body and found in clean out plugs orthe like. With- Among the objects .therefore of this pres-V that willproperly fit the body. In many cases it becomes necessary' toy removethey old body from the hub and to replace it with a plug involves muchlabor and expense.

entimprovement is to provide a plug which will fit into clean-out bodiesof various diam- Y Whereb eters and which consequently will eliminatethe-:necessity for replacing or renewing the body of the clean out whenonly a new plug is required. This Objectis attained by providing anewplug with an excessive taper holes o bodies of various diameters and toso form the thread or threaded surface portion of the new plug in apeculiar manner l adapting it to mate in a liquid and gas tight mannerwith the standard'thread formed on the'body.

With the foregoing and other vobjects `in view the invention consists inthe arrangement and combination of parts hereinafter described andclaimed, and'while the invention is not restricted to the exact detailsof.

-parts in' the several' views, and i'nfwhichs.-

CLEAN-our PLUG iron and preferably it will be sure to fit the threadedREISSUED- Figure 1 is a vertical sectional view of our improved cleanout plug.

Fig. 2 is'an enlarged'sectional' or fragmentary diagram indicating therelation of the clean out plug threads to the hard metal bodystructure'.

February 19, 1929, S`eria1 No. 192,'357,-1ed May 18, 1927-. Application.for reissue filed May 7, 1929. Serial No. l361,288'. A

Referring now more specifically to the y drawings, we show at l0 a cleanout plug comprising two main parts,-a core 11 of any suitable strong riid metal such as cast ollow for cheapness and lightness, and a collar 12of a softer metal such as lead, a'mixtu're of lead and ant-imony, or amixture of lead and tin, the collar being molded or cast'upon theeripher'y of the core 11. The core is pre erably formed with suitablecavities of any desired formation or1 nature into which the moltensofter metal of the collar will enter during `the process of formationof the .collar upon the core.

It will be notedt'hat the plug is so formed as to have a greater taperthan is usually out intending to be unnecessarily limited to anyparticular dimensions ,in this regard, we

suggest that the amount of taper should be in the proportion of aboutthree inches to twelve inches in length of the plug.

During the formation of the collar 12,'a thread14 iscast thereon. Thisthread is ofl peculiar formation in that'it is' of V-sha e generallyspeaking, sharp on top or on'tlie outside, but substantially flat on thebottom or inside at 15.'-

' 16 indicates al fragment of a body with which the 'plug is adapted .toco-operate.

These bodies are usually formed lwith standard threads of the samegeneral character as found on the plug, that is to say of V-shape, butwith sharp tops and bot-toms. Thev amount of taper .in the body openingis materiallv less than' thatof the plug' above de-` scribed, and may bezero, 4and vwhile the threads 17 of the bod are practically unformorstandard, the iameters of the o enings in the bodies are by no meansuni o'rmor standard. It will be seen therefore. that our new plughavingan excessive taper may readily be driven Q1" turned in@ the Owning ofthe body 16 irrespective of a considerable variation in diameter of the'body opening. As shown best in F ig. 2, when t 1e tapered plug is sodriven into the body opening, the sharp pointed edges of threads 17 willbite into the flat bottoms 15 of soft metal of the plug collar for anumber of turns and thereby insure a tight and reliable connectionbetween the plug and the body, and, moreover, making a connection whichis separable from time to ltime as may be requiredfor' clean outpurposes and without disturbing the effective re lacement capability ofthe plug.

e claim:

1. The herein described fitting comprising a member having a uniformtaper throughout the length thereof, the thread having a broad root of adifferent diameter than av thread to engage same, said member having asoft metal body to permit a new thread to be cut into the said root onengaging said member i with a hard metal threaded device, the taper ofthe thread of the soft metal member being greater than that of the othermember, the pitch of the angles of the sides ofthe thread eingsubstantially the same for both memers. 2. A closure member` of thecharacter set forth, including a core of hard metal, a layer of softmetal cast upon said core, said layer being threaded and havinur asubstantially uniform taper throughout the length thereof, said threadhaving a broad root of a diierent i diametervthan that ofa threadengageable therewith, said broad root permitting a new thread to be cutinto said root on engagement with a hard metal taper-threaded device,the taper of the first mentioned thread being 'greater' than that of thethread of said device, .the taper of the Afirst mentioned threadpermitting the closure member to be used with hard metal threadeddevices of different diameters.

3. In combination, a rust proof clean out plug, and threaded drainagefittings of varil ous sizes, the taper of the thread of the plug beingconsiderably greater than that of the said fittings, and havingapproximately the same number of threads as the latter, for the purposeset forth.

In testimony whereof we aix our'signatures.

FREDERICK J. MERSFELDER.v PAUL BALZE.

